Users cannot log into SeekingAlpha.com
I am on the stock Tor Browser Bundle 6.5 with no additions or changes. This issue shares some similarities with the reported login issues (ticket legacy/trac#11295 (moved)) experienced on LycosMail.
Upon submitting login info and password, enter > nothing happens.
Right clicking "Sign in / Join Now" > open link in new tab brings the full login page. Upon submitting login info and password here, I get the "The page isn't redirecting properly" error.
I have whitelisted SeekingAlpha.com in NoScript to no avail. The LycosMail workaround seems to be the only answer that currently works. I have to completely disable NoScript by going into Add-Ons > hit disable on NoScript > reboot Tor Browser. I can now log into SeekingAlpha.com just fine.